Mark Sanchez with a cane flask at the Kentucky Derby proves he's one of us

Butt fumbler who? This past weekend, the Denver Broncos' new (starting?) quarterback, Mark Sanchez, went ahead and proved that he's just a normal guy trying to have some fun in life when he got caught bringing a cane flask into the Kentucky Derby. 

As TMZ reports (snitches?), Sanchez busted out the sneaky device with "a quick twist of the top (and) revealed a secret glass tube hidden inside the cane -- which the 29-year-old proudly showed off to his crew."

One nearby looky-lou was so jaw-dropped that she told our new best friend to just "Shut the fuck up!"

Starter material, we can feel it ...

// Cover Photo: Getty Images — Body Photo: TMZ, Sporting News